This question is about the rate of a chemical reaction between two reactants, one of which is in solutuion and one of which is solid?
which of the following changes would NOT cause the rate of chemical reactions to increase.
increasing the concentration of the solutions
heating the reaction mixture to a higher temperature
using a larger volume of the solution, but keeping the concentration the same
grinding the solid reactants so that it forms a a fine powder.
which of the following changes would NOT cause the rate of chemical reactions to increase.
increasing the concentration of the solutions
heating the reaction mixture to a higher temperature
using a larger volume of the solution, but keeping the concentration the same
grinding the solid reactants so that it forms a a fine powder.
1 Answer
Using the larger volume @ the same concentration
Explanation:
increasing the concentration increasing the number of collisions between reactants, effectively increasing the rate.
heating the mixture increases the kinetic energy of the particles (they move around faster), which increases the number of collisions between reactants, increasing the rate.
grinding the reactants into a powder increases the surface area where reactions can take place, increasing the frequency of collisions and as a result, increasing the rate.
using a larger volume of reactants at the same concentration would have an equal collision frequency (per unit volume).
